215184-23-9Relevant academic research and scientific papers
N,N-dimethylcarbamato complexes of copper and zinc
Klunker,Biedermann,Schaefer,Hartung
, p. 1503 - 1508 (1998)
Reactions of the 1:1 adduct of dimethylamine and carbon dioxide (dimcarb) with metallic copper and zinc, respectively, are reported. Dimcarb gives with copper in the presence of oxygen the N,N-dimethylcarbamato copper(II) complex [Cu(O2CNMe2)2(HNMe2)2] (1). Zinc spontaneously dissolves in a dimcarb-acetonitrile mixture under generation of hydrogen and giving (H2NMe2)[Zn2 · (O2CNMe2)5] · MeCN (3). The rate of this reaction is strongly depending on the purity of the metal, high purity zinc doesn't react. But 3 can be prepared from it by electrosynthesis. The crystal structures of 1 and 3 were determined by X-ray analysis. In 1 the copper atom has a distorted octahedral coordination sphere in which the two carbamate ligands are chelating. In the homoleptic complex anion of 3 two zinc atoms are bridged by three carbamate ligands whereas the other two carbamate ligands are coordinated monodentately.
